Overview should be ready to test.

cms/djangoapps/models/settings/course_grading.py

@@ -204,23 +204,30 @@ class CourseGradingModel:
         
     @staticmethod
     def get_section_grader_type(location):
-        """
-        
-        """
         if not isinstance(location, Location):
             location = Location(location)
             
-        # TODO impl to return {grader-type, location, id (random)}
+        descriptor = get_modulestore(location).get_item(location)
+        return {
+                "grader-type" : descriptor.metadata.get('format', "Not Graded"),
+                "location" : location,
+                "id" : 99   # just an arbitrary value to 
+                }
         
     @staticmethod
     def update_section_grader_type(location, jsondict):
-        """
-        
-        """
         if not isinstance(location, Location):
             location = Location(location)
+          
+        descriptor = get_modulestore(location).get_item(location)
+        if 'grader-type' in jsondict:
+            descriptor.metadata['format'] = jsondict.get('grader-type')
+            descriptor.metadata['graded'] = True
+        else:
+            del descriptor.metadata['format']
+            descriptor.metadata['graded'] = False
             
-        # TODO impl to return {grader-type, location, id (random)}
+        get_modulestore(location).update_metadata(location, descriptor.metadata)  
         
         
     @staticmethod

cms/static/js/views/grader-select-view.js

+CMS.Models.AssignmentGrade = Backbone.Model.extend({
+	idAttribute : "cid",	// not sure if this is kosher
+	defaults : {
+		grader-type : null, // the type label (string). May be "Not Graded" which implies None. I'd like to use id but that's ephemeral
+		location : null	// A location object
+	},
+	initialize : function(attrs) {
+		if (attrs['assignment-url']) {
+			this.set('location') = new CMS.Models.Location(attrs['assignment-url'], {parse: true});
+		}
+	},
+	parse : function(attrs) {
+		if (attrs['location']) {
+			attrs.location = new CMS.Models.Location(attrs['location'], {parse: true});
+		}
+	}
+	urlRoot : function() {
+		if (this.has('location')) {
+			var location = this.get('location');
+			return '/' + location.get('org') + "/" + location.get('course') + '/' + location.get('category') + '/' 
+			+ location.get('name') + '/gradeas/';
+		}
+		else return "";
+	}
+});
+
+CMS.Views.OverviewAssignmentGrader = Backbone.View.extend({
+	// instantiate w/ { graders : CourseGraderCollection, el : <the gradable-status div> }
+	events : {
+		"click .menu-toggle" : "showGradeMenu",
+		"click .menu" : "selectGradeType"
+	},
+	initialize : function() {
+		// call template w/ {assignment-type : formatname, graders : CourseGraderCollection instance }
+		this.template = _.template(
+				'<h4 class="status-label"><%= assignment-type %></h4>' +
+				'<a data-tooltip="Mark/unmark this section as graded" class="menu-toggle" href="#">' +
+					'<span class="ss-icon ss-standard">&#x2713;</span>' +
+				'</a>' +
+				'<ul class="menu">' + 
+					'<% graders.each(function(option) { %>' +
+						'<li><a <% if (option.get("type") == assignment-type) {%>class="is-selected" <%}%> href="#"><%= option.get("type") %></a></li>' +
+					'<% }) %>'
+					'<li><a class="gradable-status-notgraded" href="#">Not Graded</a></li>'
+				'</ul>');
+		this.assignmentGrade = new CMS.Models.AssignmentGrade({
+			assignment-url : this.$el.closest('section.branch').data('id'), 
+			grader-type : this.$el.data('initial-status')});
+		this.render();
+	},
+	render : function() {
+		this.$el.html(this.template({ assignment-type : this.assignmentGrade.get('grader-type'), graders : this.graders }));
+		if (this.assignmentGrade.has('grader-type') && assignmentGrade.get('grader-type') != "Not Graded") {
+			this.$el.addClass('is-set');
+		}
+		else {
+			this.$el.removeClass('is-set');
+		}
+	},
+	showGradeMenu : function(e) {
+		e.preventDefault();
+		this.$el.toggleClass('is-active');
+	},
+	selectGradeType : function(e) {
+	      e.preventDefault();
+
+	      // TODO I'm not happy with this string fetch via the html for what should be an id. I'd rather use the id attr
+	      // of the CourseGradingPolicy model or null for Not Graded (NOTE, change template's if check for is-selected accordingly)
+	      this.assignmentGrade.save('grader-type', $(e.target).html());
+	      
+	      this.render();
+	}
+})
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